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Joseph Crowell 9403123046 dri3: implement sync objects support

with this, we have a full dri 1.4 implementation

struct amdgpu_dri3_syncobj - wraps DRM syncobj handle with:

syncobj_handle - DRM syncobj handle
owns_handle - whether we own and should destroy the handle
function pointers implemented:

amdgpu_dri3_syncobj_free() - frees the syncobj and destroys the DRM handle
amdgpu_dri3_syncobj_has_fence() - checks if syncobj has a fence
amdgpu_dri3_syncobj_is_signaled() - checks if syncobj is signaled
amdgpu_dri3_syncobj_export_fence() - exports syncobj to fence fd
amdgpu_dri3_syncobj_import_fence() - imports fence fd into syncobj
amdgpu_dri3_syncobj_signal() - signals the syncobj
amdgpu_dri3_syncobj_submitted_eventfd() - eventfd submission callback
amdgpu_dri3_syncobj_signaled_eventfd() - eventfd signaled callback
import function:

amdgpu_dri3_import_syncobj() - creates syncobj and optionally imports fence
Updated dri3_screen_info_rec to version 4 with import_syncobj function pointer.

2026-02-09 13:51:00 +10:00